TY  - BOOK
AU  - Ishida, Makoto
AU  - 
TI  - Genus fields of algebraic number fields
T2  - Lecture Notes in Mathematics, No.0555
U1  - R  LNM.0555 
PY  - 1976///
CY  - Springer-Verlag, Berlin
KW  - Lecture Notes in Mathematics
ER  -